Home / 126,060.70-189,091.05-90,631.30

Finding the Fourth Proportional to 126,060.70, 189,091.05 and 90,631.30

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Solution

The fourth proportional to 126,060.70, 189,091.05 and 90,631.30 is: 135,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,060.70 : 189,091.05 = 90,631.30 : x
  2. Step 2: Convert to fraction form
    126,060.70/189,091.05 = 90,631.30/x
  3. Step 3: Cross multiply
    126,060.70x = 189,091.05 × 90,631.30
  4. Step 4: Simplify right side
    126,060.70x = 17,137,567,679.87
  5. Step 5: Solve for x
    x = 17,137,567,679.87/126,060.70
  6. Step 6: Final answer
    x = 135,946.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.